X-Recipient: archive-cygwin AT delorie DOT com
X-Spam-Check-By: sourceware.org
To: cygwin AT cygwin DOT com
From: Ray Hurst <rhurst2 AT cox DOT net>
Subject:  Re: Issue with GDB under Cygwin and XP
Date:  Fri, 15 Feb 2008 15:21:45 -0800
Lines: 61
Message-ID: <fp56qr$fsr$1@ger.gmane.org>
References:  <for5v0$qcr$1 AT ger DOT gmane DOT org>
Mime-Version:  1.0
Content-Type:  text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding:  7bit
User-Agent: Thunderbird 2.0.0.9 (Windows/20071031)
In-Reply-To: <for5v0$qcr$1@ger.gmane.org>
X-IsSubscribed: yes
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
Precedence: bulk
List-Id: <cygwin.cygwin.com>
List-Unsubscribe: <mailto:cygwin-unsubscribe-archive-cygwin=delorie DOT com AT cygwin DOT com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com

Here is a run of a HellowWorld program (listed below in gdb).

Can someone tell me why the variables a, b, c are not the correct 
values. I dumped the local stack and the variables are correct on the stack.

I'm running Windows XP under cygwin.
gcc 4.2.3

The gdb run is as follows:

GNU gdb 6.5.50.20060706-cvs (cygwin-special)
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain 
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i686-pc-cygwin"...
(gdb) list ,20
11      #include <stdio.h>
12      #include <stdlib.h>
13
14      int main(void) {
15              int a,b,c;
16              a = 10;
17              b = 20;
18              c = 30;
19              puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
20              printf("\na = %d,  b = %d,  c = %d\n", a,b,c);
(gdb) b main
Breakpoint 1 at 0x401050: file ../src/HelloWorld.c, line 14.
(gdb) run
Starting program: 
/cygdrive/c/projects/Eclipse/WorkSpaces/cdt/HelloWorld/Debug/H
elloWorld.exe
Loaded symbols for /cygdrive/c/WINDOWS/system32/ntdll.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/kernel32.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/cygwin1.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/advapi32.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/rpcrt4.dll
Loaded symbols for /cygdrive/c/WINDOWS/system32/secur32.dll

Breakpoint 1, main () at ../src/HelloWorld.c:14
14      int main(void) {
(gdb) n
16              a = 10;
(gdb) n
17              b = 20;
(gdb) n
18              c = 30;
(gdb) n
19              puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
(gdb) print a
$1 = 1627408910
(gdb) print b
$2 = 1627408208
(gdb) print c
$3 = 264
(gdb)

Ray


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/